Hollow body and method of making same.



J. J. LEE.

HOLLOW BODY AND METHOD OF MAKING SAME.

APPLICATION FILED OCT. I6. 1911.

Patelited July 30, 1918.

" 3W0 EA 12356.

' To all whom it may concern:

STATES PATENT OFFICE.

JOHN J. m, or BROOKLYN, NEW YORK, AssIGnon T ALBERT nnnnnnn AND JOSEPH BOTHSCHILD, DOING BUSIfiESS AS COPARTNERS UNDER THE BEHREND & BOTHSGHILD, .OF NEW YORK, N. Y.

HOLLOW BODY D METHOD OF MAKING. SAME.

Specification of Letters Patent.

Patented July 30, 1918.

Be a known that I, JOHN J. LEE, a citizen of the United States, and a resident of Brooklyn, in the county of Kingsand State of New York, have invented certain new and useful Improvements in Hollow Bodies and Methods of Making Same, of which the following is a specification, reference being made to the accompanying drawings, formingipart thereof.

y invention relates to the formation of hollow bodies more particularly for toys and decorations of nearly spherical shape, which bodies are extremely llght in wei ht while ossessing exceptional strength an durability and a hard, glistenin finish without undesirable brittleness. uch improved hollow bodies are usually highly colored and are commonly used for decorating Christmas trees, and the aim of my invention is to produce such hollow bodies by a simple and inexpensive process using a rubber balloon body as a base and thereby producin such bod es having, amon other thin t e advantlages which I ave herein efore set fort is partially illustrated in the accompanying drawings in which Figure 1 is a vertical sectional view of the balloon body mounted ona tapered stick before dipping;

Fig. 2 is a vertical sectional view similar to that shown in Fig. 1 with the different (fzoatings shown in a somewhat exaggerated orm;

Fig. 3 is an enlarged detail section of a P2135 of the hollow body shown in Fig. 2; an

Fig. 4 is a front view of thecompleted hollow body with the neck shown in sectional elevation.

Similar numerals, refer to similar parts throughout the several figures.

In carr ing out my improved method, I take as a ase for the complete hollow body a balloon body 5 made of thin rubber of pure uality and extreme elasticity, which will al ow same to be inflated and expanded to many times. its normal size. I then in- I attain this result by the method which sert in the balloon neck 6 the stick or rod 7 FIRM-NAME OF preferably tapered toward its point 8 which shall contact with the top 9 of the balloon body 5, as shown in Fig. 1. The balloon body 5 is now inflated and expanded to the desired size in any convenient manner, the

stick 7 serving not only to close the opening within the neck 6 after inflation, but also to preserve the spherical form and normal contour of the balloon body 5 in the dipping process that follows.

I then prepare the solution for the first coating of the balloon body which coating is superimposed upon'the outer surface of the balloon body 5. I form this solution by mixing together four parts by weight of glue, one part by wei ht of wood alcohol preferably of ninety-fi ve (95%) er cent. strength, one part by wei ht of w ite lead, and one part by weight 0 powdered chalk. I first lIllX the glue with sufiicient water to dissolve same with the aidof heat, and then add the wood alcohol to the dissolved glue which causes the glue to form a viscous mass. The white lead and powdered chalk are mixed to ther, and thereafter added to the melted g ue, the. viscosity of the mass preventin the mixed white lead and chalk from sinking to the bottom of the glue. I have found that the white lead imparts durability and strength to the coating thereafter to be formed by renderinge the completed hollow bodies less likely to come shattered or broken, and the whlte lead also prevents deterioration of the glue, while the addition .of powdered chalk to the mixture assists in the subsequent dryin of the coating by acting as an absorbent ller. This composition is thoroughly mixed in the presence of heat until it forms a solution of suitable uniformity and consistency for dipping therein of the balloon body 5, which dip ing pronow thoroughly dried. This aluminum bronze coating 11 aifords a hard surface for the hollow body now formed and it also imparts to the hollow body an inner reflecting surface for the outer varnish coating 12. This outer coating 12 is a solution made of varnish into which the coloring substance is stirred to give the desired color to the completed body; for example, I have used the varnish solution known as bronzin liquid in which red oil colors are soluble. he balloon body is dipped into this colored varnish solution and then allowed to dry whereby the varnish coating 12 having a hard glistening surface of high color is formed, the colors being intensified by the aluminum bronze coatin beneath. I then withdraw the tapered stick from the neck 6 of the hollow body, and thereafter close the neck 6 by the plug 13 which may have the staple 14 mounted therein, as shown in Fig. 4, from which the hollow body may be conveniently suspended.

It is obvious that the several coatings adhering to the outer surface of the hollow body 5 not only hold same in its expanded position'and shape and of any desired size,

ut also tend to form a homogeneous outer shell for the entire body, each coating closely adhering to its adjacent coating and the coating 10 firmly holding the balloon body 5 in osition.

'I c aim as my invention:

1. The method of making a hollow homogeneous body which COIlSlStS in inserting within an elastic rubber body an elongated tool, then inflating the rubber body to the desired slze, whereby the tool serves to maintain the rubber body inflated and in its expanded contour, thereafter dipping the inflated body and tool in a thereto adhering coating solution and drying same to form. an

indivisible shell body self-maintainable at its predetermined inflated size, and finally withdrawing the tool from the hollow body so formed.

2. The method of making a hollow homogeneous body which consists in inserting within an elastic rubber body and along its lon 'tudinal axis an elongated tool, then inflatmg the rubber body to the desired size,

whereby the tool serves to maintain the rubber body inflated and in its longitudinally expanded contour, thereafter dipping the inflatedbody and tool in a thereto adhering coating solution and drying same to form an indivisible shell body self-mantainable at its predetermined inflated size, and finally withdrawing the tool from the hollow body so formed.

-3. The method of making a hollow homogeneous spheroidal body which consists in inserting within an elastic rubber body an elongated tapered tool, then inflating the rubber body to the desired size, whereby the expanded elastic rubber body,

emma along its longitudinal axis an elongated tapered tool, then inflatin the rubber body to the desired size, where y the tool serves to maintain the rubber body inflated and in its longitudinally expanded contour, thereafter dipping the inflated body and tool in a thereto adhering coating solution and drying same to form an indivisible shell body self-maintainable at its predetermined inflated size, and finally withdrawing the tool from the hollow body so formed.

5. As a new article of manufacture, a h0l low homogeneous body comprising an inner expanded elastic rubber body, a thereto adhering coating shell indivisibly compounded with said body made by mixing glue, wood alcohol, White lead and chalk in substantially the proportions described, self-maintainable at any predetermined size.

6. As a new article of manufacture, a hol low homogeneous body comprising an inner a thereto adhering coatin shell indivisibly compounded with said b0 y made by mixing glue, wood alcohol, white lead and chalk in substantially the proportions described, self-maintainable at any predetermined size, and a su erimposed outer varnish coating.

As a new article of manufacture, a hollow spheroidal body comprising an inner expanded elastic rubber body, a thereto adhering coating shell homogeneously compounded with said body made by mlxing glue, wood alcohol, white lead and chalk in substantially the proportions described whereby the body is thereby maintained in its expanded form, and a superimposed outer varnish coating combined with coloring substances.

8. As a new article of manufacture, a hollow spheroidal body comprising an inner expanded elastic rubber body, a thereto adherin coating shell homogeneously compoun ed with said body made b mixing glue, wood alcohol, white lead an chalk in substantially the proportions described, whereby the body is thereby maintained in its expanded form, an aluminum bronze coating embodied in the outer surface of said. coating, and a'superim osed outer varnish coating combined wit coloring substances.

9. As a new article of manufacture, a homogeneous hollow body comprising an inner expanded elastic rubber body, a theresize, an aluminum bronze reflecting coating to adhering coating homogeneously comembodied in the outer surface of said coatpounded with said body made by mixing ing, and a superimposed translucent outer 10 glue, wood alcohol, white lead and chalk in varnish coating combined with coloring sub- 5 substantially the proportions and manner stances.

described, whereby an indivisible shell body is formed self-maintainable in its expanded JOHN J. LEE. 

